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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - False positive about Use of memory after it is freed for OpenJDK"
href="https://bugs.llvm.org/show_bug.cgi?id=40913">40913</a>
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<th>Summary</th>
<td>False positive about Use of memory after it is freed for OpenJDK
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>Other
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Static Analyzer
</td>
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<th>Assignee</th>
<td>dcoughlin@apple.com
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<th>Reporter</th>
<td>zhaixiang@loongson.cn
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<th>CC</th>
<td>dcoughlin@apple.com, llvm-bugs@lists.llvm.org
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<pre>Hi,
Bug reported by the clang static analyzer.
Description: Use of memory after it is freed
File:
/home/loongson/zhaixiang/jdk12-mips-llvm/src/java.base/share/native/libverify/check_code.c[1]
Line: 1328
Preprocessed file[2] is available.
I argue that Use of memory after it is freed is *False Positive*
----- 8< -------- 8< -------- 8< -------- 8< -------- 8< -------- 8< ---
src/java.base/share/native/libverify/check_code.c:1328:22: warning: Use
of memory after it is freed
clazz_info = cp_index_to_class_fullinfo(context, key,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----- 8< -------- 8< -------- 8< -------- 8< -------- 8< -------- 8< ---
Full analyzer log and invocation[3] is available too. Please change
include file path, for example,
/home/loongson/zhaixiang/jdk12-mips-llvm/src/java.base/share/native/libjava
change to YOUR_OPENJDK_SRC_DIR/src/java.base/share/native/libjava
Perhaps it doesn't need to include the *build* directories, otherwise it
is difficult to reproduce the issue :)
Cheers,
Leslie Zhai
[1]
<a href="http://hg.openjdk.java.net/jdk/jdk12/file/0276cba45aac/src/java.base/share/native/libverify/check_code.c#l1328">http://hg.openjdk.java.net/jdk/jdk12/file/0276cba45aac/src/java.base/share/native/libverify/check_code.c#l1328</a>
[2] <a href="https://raw.githubusercontent.com/xiangzhai/jdk-dev/master/check_code.c">https://raw.githubusercontent.com/xiangzhai/jdk-dev/master/check_code.c</a>
[3]
<a href="https://raw.githubusercontent.com/xiangzhai/jdk-dev/master/check_code_analyzer.log">https://raw.githubusercontent.com/xiangzhai/jdk-dev/master/check_code_analyzer.log</a></pre>
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